Hi Guys,
I am trying to build a dimmer switch using a triac, but am pretty unsure about some aspects of its operation. I have gathered that there are several modes of firing, but the gate firing voltage max is usually less than 5V, what is the common method of generating the firing voltage? and due to the methods of firing am i correct in saying that a negative firing voltage must be generated for the negative part of the AC wave?
finally the datasheet gives several devices with different gate current max values, will any current over a threshold upto the maximum fire the device or does the current level relate to the timing of the firing?
Hope someone can help me out
Thanks
Tom
I am trying to build a dimmer switch using a triac, but am pretty unsure about some aspects of its operation. I have gathered that there are several modes of firing, but the gate firing voltage max is usually less than 5V, what is the common method of generating the firing voltage? and due to the methods of firing am i correct in saying that a negative firing voltage must be generated for the negative part of the AC wave?
finally the datasheet gives several devices with different gate current max values, will any current over a threshold upto the maximum fire the device or does the current level relate to the timing of the firing?
Hope someone can help me out
Thanks
Tom